Column clamp



Sept. M, E923. l

L. LAMPERT COLUMN CLAMP Filed April 22. 1922 reame sept. ii', ieee.

UNET@ STATES lpett@ PATE-NT FFHC.

LYDIA LAMBERT, 0F CHICAGO, ILLINOIS.

COLUMN CLAMP.

Application led April 22, 1922. Serial No. 556,061.

'To a'ZZ whomzt mwr/ concern:

Be it known t at I, LYDIA LAMPERT, a citizen of the United States of America, and a resident of Chicago, county of Cook,.and State of Illinois, have invented a new and useful Improvement in Column Clamps; of which the following is a specification.

The main objects of this invention are to provide an improved clamp for concrete molds particularly of the type used for forming columns; to provide an improved construction and arrangement of a flexible binding member adapted to embrace the mold; to provide improved tightening means for drawing up the binding member; and to provide an improved connection of said-bindin member and tightening means With each ot er whereby they are compactly assembled for storage or shlpment and are quickly and easily arranged on the mold preparatory to being adjusted to clamp the mold parts in place.

An illustrative embodiment of this invention is shown in the accompanyingdrawing,

' in which- Figure 1 is a perspective view of a section of a. mold for forming a concrete column, the mold arts being clamped in place by a clamping evice constructed in accordance with this invention.

Figure- 2 is a front elevation of the arrangement shown in Figure 1.

Figure 3 is a side elevation of a clamping device constructed in accordance with this invention showing the compact arrangement ofthe same for storage or shipment purposes.

Figure 4 is a detail view of the arbor by means of which the clamping member is drawn up.

A concrete mold clamp constructed in accortance with this invention involves the use of a flexible binding member adapted to embrace the mold, one end of which is secured to an arbor permanently journaled upon a support adapted to rest against the mold and having the other end of the binding member detachably connected thereto, the arbor being arranged so as to draw the binding member up tight around the mold when in use or to coil the binding member on the support when the device is to be shipped or stored. A pawl and ratchet is arran ed on the support and arbor so as to loc the arbor in osition to hold the binding member as ad- Justed upon the mold.

In thespecific embodiment herein shown a support 1 of channel shape has an arbor or shaft 2 journaled thereon to which one end of the flexible binding member 3 is secured so that, when the other end l of said binding member is extended around the mold 5 and detachably connected to said support 1, said arbor may be rotated' for the purpose of drawing up the binding member firmly around the mold and retaining it in its ad- ]usted position by means of av ratchet 6 and pa-Wl 7.

The support 1 is preferably a channelshaped member having flanges 8 and 9 which provide a support for the arbor 2. The holder may be either a metal stamping or a casting and is provided with aperture 10 adJa-cent one end of the base 11 thereof through which a nail may beedriven for temporarily fastening the support to the mold 5 preparatory to extending lthe binding member 3 there-around.

The arbor 2 comprises a piece of shafting or a malleable casting of a length considerably greater than the distance between the flanges so that the ends thereof extend beyond said flanges when the arbor is placed 1n posltion. A nut 12 screwed onto one end thereof secures the arbor in place on the support. so that it can be removed only in an axial direction when said nut is re-moved. The ratchet 6 may be separately constructed or formed integrally with the arbor and in either event is loca-ted on the outside of the flange 9 so that it coacts with the nut 12 to secure the arbor against axial movement. A slot 13 is formed in a medial part of the arbor through which one end of the band 3 is inserted and bent around the arbor so as lto more or less permanently secure the arbor and the band together. The outer end of the arbor is squared as shown at 14 so as to enable a wrench or other tool to be ap#` plied thereto by which the arbor may be rotated.

The flexible binding member 3 is preferably in the form of a strip of sheet metal, the gauge of which depends upon the various sizes of molds with which the clamp is likely to be used. The strip being preferably wrought metal, it is more or less readily handled in either uncoiling it to pass it around the mold as shown in Figure 1 or in coiling it up as shown in Figure 2 when the device is to be stored or shipped. Suitable means are provided for connecting the end t of the band 3 to the support 1 after the band has been extended around the mold 5. A suitable form of means comprises an aperture 15 formed in the end l of the binding member which is adapted to engage a lug- 16 extending inwardly from the base 11 of the support 1 adjacent the end thereof in which the aperture 10 is formed.

' The pawl 'a' is pivoted on the flange 9 1n any suitable manner so that the end thereof properly engages the teeth on the ratchet 6 so as to enable the operator to lock-the arbor 2 in place after it has been turned to properly tighten the binding member 3.

The tightening device, as we have shown and described, is used in substantially the followin manner:

For s ipment -and storage purposes the binding member or band 3 is Wound up on the armor 2 as illustrated in Figure 3. The parts are thus all permanently secured together and are compactly arranged so as to occupy a comparatively small amount of space and also be always conveniently arranged and available for immedlate use.

When the device is to be used the support 1 is secured upon the mold 5 in the proper place by drivin a nail through the aperture 10 into the mol. The operator then grasps the end 4 of thebinding member 3 and carries it around 'the mold, the band in the mean while unreeling from the armor 2. The end 4 ofthe band is secured to the support 1 by having the aperture 15 therein placed over the projection 16 on the support. A

. wrench or other tool is applied to the squared end 14 of the arbor and the arbor rotated so as to draw u the band, firmly around the mold. Pawl is thrown into position to engage the ratchet 6 so as to lock the arbor in position so as to secure the band as adjusted around the form.

When the device is to be removed from the form, the pawl 7 is retracted which releases the tension on the tightening member 3 and permits the operator to disconnect I l the end 4 from the support 1. Thereupon a wrench or tool is app ied to the s uared end 14 of the arbor 2 and the band coi ed up scribed, it will be understood that numerous details of the construction shown may be altered or omitted without departing from the spirit of this invention as defined by the following claims.

I claim:

1. A clamp for concrete molds comprising a support, a single arbor journaled thereon, so as to be removed :from said support only by dismantling th'e clamp, a flexible binding member permanently attached at one end to sald armor, and having its other end normally free, co-acting means on said support and said other end of said strap, whereby said strap may be detachably connected to sald support after having been wrapped around a mold and then being drawn up tight by said arbor, and means for locating j said arbor to hold said binding member in its drawn-u position.

2. A c amp for concrete molds comprising a channel-shaped support, an arbor spanning the parallel flanges of said support and journaled thereon adjacent to the upper edges and .removable therefrom only in an axial dlrection, a Hexible binding member secured to said arbor between said llanges and adapted to be'placed around the mold, a projection on the base of said support, said binding member having a recess formed in the ot er end thereof adapted to `engage said projection for connecting said member and support together, and pawl and ratchet mechanism for securing said arbor to hold said member in its adjusted position.

Signed at Chicago this 20th day of April,

LYDIA LAMPERT.

sol 

